Electric-cable-connecting means



J. M. KIEFER, JR.. ELECTRHC CABLE CONNECTING MEANS.

APPLICATION FILED JUNE 21. 1918.

1,336,437. Patented Apr. 13, 1920.

1} Z. [3 2/ 22 16 [H L I 12 l (T a 11 20 I 7& I231 l, 1(6 1 I, 17 I N W7j f 21 1 12 5% "3 73 12 2'2 14 llg I I f/// H] l 23 h; .T' /6 I I 24 FJ 75 jig Inuerz ('07? UNITED STATES PATENT OFFICE.

JOHN M. KIEFER, JR., OF NEWARK, NEW JERSEY, ASSIGNOR T0 SPLITDORFELECTRICAL COMPANY, OF NEWARK, NEW JERSEY.

ELECTRIC-CABLE-CONNECTING MEANS.

Specification of Letters Patent.

Patented Apr. 13, 1920.

Application filed June 21, 1918. Serial No. 241,153.

To all whom it may concern:

Be it known that I, JOHN M. Krnrnn, J r., a citizen of the UnitedStates, residing at Newark, in the county of Essex and State of NewJersey, have invented certain new and useful Improvements inElectric-Cable Connecting Means, of which the following is aspecification.

My invention relates particularly to means for connecting an electriccable to a distributer used in connection with an ignition generator.The vibration produced by internal combustion engines, especially thoseused on airplanes, is considerable, which together with the other shocksto which an autovehicle is subjected is apt to loosen the electricalconnection to the ignition machine and consequently considerableattention must be paid to the means used in attaching electric cables tothe ignition device.

It is the object of my invention to provide means of attaching electriccables to the distributor of an ignition generator, which is strong,relatively simple, water and dust proof, but which connecting means,while a secure one, is such that the electric cable or cables may bequickly detached from the distributer block.

Other and further objects will be apparent to one skilled in the artaftera study of this specification taken in connection with the drawingwhich forms a part thereof.

In the drawing, Figure 1 illustrates an 8 cylinder distributer blockadapted to be used in connection with an ignition magneto.

Fig. 2 is a partial sectional view, along the line 22 of Fig. 1.

Fig. 3 is a similar view but with an alternative arrangement of theconnecting electrical contacts.

Referring particularly to the details, wherein like numbers refer tocorresponding parts in the various views, 1 is a distributer block ofinsulating material which is adapted to be fastened to the ignitiongenerator by any suitable fastening means. The block 1, as shown, issuitable to furnish ignition current to an 8 cylinder engine since thereare 8 contact segments 2 to 9 inclusive, which segments are shown indotted position in Fig. 1 and part of which are shown in Fig. 2.

In order to simplify this description only one connection will bereferred to as it is to be understood that the others are the same asthe one shown in section in 2 or 3.

The block 1 has a bore 10 extending from its exterior face 11 toward thecontact segeither Figs.

-ment 9 to which is fastened in any suitable 2, a stiletto 'P111 12which is positioned within the bore manner, as indicated in Fig.

10 and preferably extends through the bore 10 beyond the face 11. Acable holder 13 has two projections 11 and 15 each of which have boringsextending one into the other. The boring 1n pro ection 14: is adapted toreceive an insulated electrical cable 16.

scribed, the projection 15 is inserted in the bore 10 in such a way thatthe stiletto pin passes through the clamp 17 and its end 21, beingsupported by the end of the clamp 17, pierces the insulation of cable 16and into the conductor 22. A soft insulating washer 20 is used to sealthe joint between the holder 13 and the face 11 of the block 1. In themodified form shown in Fig. 3, the stiletto pin 12 is permanentlyfastened to a bushing 23 that is carried in the projection by means ofthe pin 21 and the clamp 17 is constructed so as to be fastened to thecontact segment 9 in any suitable manner. The method of inserting theholder 13 in the block is the same as described for Fig. 2.

\Vhile I have shown two forms in which my invention may be put intopractice, I do -not wish to be limitedto the exact construction of thedetails shown as these details may be varied without departing from thespirit of my invention and the scope of the appended claims.

Having thus described my invention what I claim is:

1. An electric cable connecting means including in combination, a blockof insulating material having one or more contact segments set therein,a bore in said block extending from its exterior face to said contactsegment, a stiletto pin fastenedto said contact segment and extendingoutwardly in the bore beyond the face of said block, a holder having twoprojections substantially at right angles to each other withinterconnecting borings, one of said borings adapted to receive anelectric cable, the other boring having means mounted therein to engagesaid stiletto pin intermediate its ends when the holder projectioncarrying said means is inserted into the bore in said block whereby saidpin passes through said engaging means into the electric cable for thepurpose described.

2. An electric cable connecting means including in combination, a blockof insulating material having one or more contact segments set therein,a bore in said block extending from its exterior face toward saidcontact segment, a stiletto pin fastened to said contact segment andextending outwardly in said bore, said pin having an enlargementintermediate the segment and its pointed end, a holder having twoprojections substantially at right angles to each other withinterconnecting borings, an electric cable seated in one of saidborings, means mounted in the other of said borings for engaging theenlargement on the stiletto pin when the holder projection carrying saidmeans is inserted into the bore in said block, whereby said pin piercesthe 7 electric cable and is held in. such position by said pinenlargement engaging means.

8. In electric cable connecting means including in combination, a blockof insulating material having one or more contacts set therein, a borein said block extending from its exterior face toward said contactsegment, a holder formed to receive an electric cable and having aprojection adapted to fit within said bore in said block, a spring clampcarried within the interior of said projection and a stiletto pinmounted in the block within said bore and electrically connected to saidcontact segment, said pin being adapted to pierce said electric cablewhen the projection on the holder is inserted in said bore, whereby saidspring clamp engages the stiletto pin intermediate its ends to hold theholder in place on the block, as and for the purpose described.

1-. In electric cable connecting means including in combination, a blockof insulating material having one or more contact segments set therein,a bore in said block extending from its exterior face to said contactsegment, a holder having two projections substantially at right anglesto each other with interconnecting borings, one of said borings adaptedto receive an electric cable, the other of said borlngs havmg means forsupporting one end of a stiletto -pin which is adapted to pierce saidelectric cable when inserted through said supporting means, and clampingmeans adapted to engage the stiletto pin within the boreof said block insuch a manner as to securely hold the holder in position against theface of the block and make an electrical connection between the contactsegment and the cable.

5. In electric cable connecting means including in combination, a blockof insulating material having one or more contact segments set therein,a bore in said block extending from its exterior face toward saidcontact segment, a holder having two projections with interconnectingborings, one ofsaid projections and boring therein adapted to receive anelectric cable, the other of said projections adapted to fit within thebore of said block, and means for fastening the holder in position onsaid block and making an electrical connection between said cable andsaid contact segment in the block, consisting of; a stiletto pin adaptedto pierce the cable and a clamping device,independent of the cable forengaging the stiletto pin. intermediate its ends.

6. In electric cable connecting means ineluding in combination, a blockof insulating material having one or more contact segments set therein,a bore in said block extending from its exterior face toward saidcontact segment, a holder having two projections with interconnectingborings, one

tively large central bore and having one or more contact segments settherein and presenting contact faces on the surface of said bore, anZLCltlltlOllitl smaller bore in said block extending from its exteriorface to SiLlCl contact segment, a holder having two projections withinterconnect-ing borings, one of said projections and boring thereinadapted to receive an electric cable, the other of said projectionsadapted to fit within-the second mentioned bore of said block, andcommon means for detachably fastening the holder in position on saidblock and for making an electrical connection between said cable andsaid contact segment in the block.

' In witness whereof, I afiix my signature.

JOHN M. mrna, JR.

